/* Layout concept: left-aligned pages on a cool paper ground. The hi-vis amber of a
   tow-truck beacon is the single action colour; condensed road-sign type carries
   headings and numbers; Be Vietnam Pro carries everything people read. */
:root {
  --paper: #F1F3F2;
  --surface: #FFFFFF;
  --surface-2: #E6EBEA;
  --ink: #172026;
  --ink-2: #47555E;
  --ink-3: #6F7D86;
  --line: #D5DCDD;
  --brand: #FFB81C;
  --on-brand: #172026;
  --accent-ink: #875100;
  --river: #106B6A;
  --river-soft: #D8ECEA;
  --alarm: #C93A2C;
  --alarm-soft: #FBE4E0;
  --ok: #1B7F4E;
  --ok-soft: #DCF0E4;
  --warn: #8A5A00;
  --warn-soft: #FFF0C7;
  --asphalt: #1A2329;
  --asphalt-2: #222D34;
  --asphalt-ink: #EEF2F3;
  --asphalt-ink-2: #A9B7BF;
  --shadow: 0 1px 2px rgb(23 32 38 / .06), 0 12px 32px -12px rgb(23 32 38 / .22);
  --f-display: "Barlow Condensed", "Arial Narrow", "Roboto Condensed", system-ui, sans-serif;
  --f-body: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;

  /* page-level map (dispatch board) */
  --mk-land: #EDF0E8; --mk-field: #E3E9D7; --mk-urban: #E1E4DE; --mk-water: #B9D8D8; --mk-canal: #C8E0E0;
  --mk-road: #FFFFFF; --mk-road-case: #D3D9D1; --mk-ql: #FFE0A6; --mk-ql-case: #D9A54A; --mk-ct: #BFE2CB; --mk-ct-case: #4FA275;
  --mk-label: #4E5C65; --mk-water-label: #2E7B7C; --mk-halo: #FFFFFF;
  --mk-flood: rgb(40 120 160 / .2); --mk-flood-line: rgb(40 120 160 / .55);
  --mk-route: #172026; --mk-route-case: #FFFFFF; --mk-you: #FFB81C; --mk-you-ring: #172026; --mk-pin: #172026;
  --mk-truck-cab: #1C262D; --mk-truck-bed: var(--brand); --mk-truck-stroke: #FFFFFF; --mk-car: #F4F6F7;
  --mk-shield-ink: #3A2A00; --mk-heat-hi: #FF5A3C; --mk-heat-mid: #FFB81C; --mk-heat-lo: #FFD777;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0F1519; --surface: #172026; --surface-2: #1F2A31;
    --ink: #E8EDEF; --ink-2: #A9B6BD; --ink-3: #7F8D96; --line: #2A363E;
    --accent-ink: #FFC54D; --river: #63BDB9; --river-soft: #15302F;
    --alarm: #FF6E5E; --alarm-soft: #3A1D1A; --ok: #4CC487; --ok-soft: #14301F; --warn: #FFC54D; --warn-soft: #33290F;
    --shadow: 0 1px 2px rgb(0 0 0 / .3), 0 12px 32px -12px rgb(0 0 0 / .6);
    --mk-land: #182127; --mk-field: #1B252B; --mk-urban: #222C33; --mk-water: #1E3A42; --mk-canal: #21414A;
    --mk-road: #2E3941; --mk-road-case: #1A2228; --mk-ql: #5E4A26; --mk-ql-case: #3D311A; --mk-ct: #2B5A43; --mk-ct-case: #1C3A2C;
    --mk-label: #93A2AB; --mk-water-label: #5FA9AA; --mk-halo: #12191E;
    --mk-flood: rgb(90 170 210 / .2); --mk-flood-line: rgb(90 170 210 / .5);
    --mk-route: #FFB81C; --mk-route-case: #12191E; --mk-you-ring: #12191E; --mk-pin: #E8EDEF;
    --mk-truck-cab: #E9EEF1; --mk-truck-stroke: #12191E; --mk-car: #C9D2D8; --mk-shield-ink: #F5E2B8;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0F1519; --surface: #172026; --surface-2: #1F2A31;
  --ink: #E8EDEF; --ink-2: #A9B6BD; --ink-3: #7F8D96; --line: #2A363E;
  --accent-ink: #FFC54D; --river: #63BDB9; --river-soft: #15302F;
  --alarm: #FF6E5E; --alarm-soft: #3A1D1A; --ok: #4CC487; --ok-soft: #14301F; --warn: #FFC54D; --warn-soft: #33290F;
  --shadow: 0 1px 2px rgb(0 0 0 / .3), 0 12px 32px -12px rgb(0 0 0 / .6);
  --mk-land: #182127; --mk-field: #1B252B; --mk-urban: #222C33; --mk-water: #1E3A42; --mk-canal: #21414A;
  --mk-road: #2E3941; --mk-road-case: #1A2228; --mk-ql: #5E4A26; --mk-ql-case: #3D311A; --mk-ct: #2B5A43; --mk-ct-case: #1C3A2C;
  --mk-label: #93A2AB; --mk-water-label: #5FA9AA; --mk-halo: #12191E;
  --mk-flood: rgb(90 170 210 / .2); --mk-flood-line: rgb(90 170 210 / .5);
  --mk-route: #FFB81C; --mk-route-case: #12191E; --mk-you-ring: #12191E; --mk-pin: #E8EDEF;
  --mk-truck-cab: #E9EEF1; --mk-truck-stroke: #12191E; --mk-car: #C9D2D8; --mk-shield-ink: #F5E2B8;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 16px/1.6 var(--f-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1, h2, h3, h4 { margin: 0; text-wrap: balance; }
p, ul, ol, figure, dl, dd { margin: 0; }
img, svg { max-width: 100%; }
a { color: var(--river); text-underline-offset: 3px; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--river); outline-offset: 2px; border-radius: 6px; }
.num { font-variant-numeric: tabular-nums; }

.i {
  width: 1.2em; height: 1.2em; flex: none;
  fill: none; stroke: currentColor; stroke-width: 1.8;
  stroke-linecap: round; stroke-linejoin: round;
  vertical-align: -0.22em;
}

.wrap { width: 100%; max-width: 1240px; margin-inline: auto; padding-inline: clamp(16px, 4vw, 40px); }

/* type scale: 13 / 15 / 16 / 19 / 24 / 32-48 / 56-96 */
.display { font-family: var(--f-display); font-weight: 800; line-height: .92; letter-spacing: -.005em; }
.h1 { font: 800 clamp(2.6rem, 1.6rem + 3.6vw, 4.4rem)/.95 var(--f-display); letter-spacing: -.005em; }
.h2 { font: 700 clamp(2rem, 1.4rem + 2.2vw, 3rem)/1.02 var(--f-display); letter-spacing: 0; }
.h3 { font: 700 1.2rem/1.3 var(--f-body); }
.lead { font-size: clamp(1.05rem, .98rem + .3vw, 1.2rem); line-height: 1.6; color: var(--ink-2); max-width: 62ch; }
.kicker { font: 600 .95rem/1.3 var(--f-body); color: var(--accent-ink); }
.muted { color: var(--ink-2); }
.faint { color: var(--ink-3); }
.small { font-size: .875rem; }

/* ---------- site header ---------- */
.site-head {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50;
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-head__in { display: flex; align-items: center; gap: 18px; min-height: 60px; }
.logo { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; white-space: nowrap; flex: none; }
.logo .mark { width: 30px; height: 30px; flex: none; }
.logo b { font: 700 1.35rem/1 var(--f-display); letter-spacing: .01em; }
.site-nav { display: flex; gap: 2px; overflow-x: auto; scrollbar-width: none; flex: 1; min-width: 0; }
.site-nav::-webkit-scrollbar { display: none; }
.site-nav a {
  padding: 8px 11px; border-radius: 10px; color: var(--ink-2); text-decoration: none;
  font-size: .9rem; font-weight: 500; white-space: nowrap;
}
.site-nav a:hover { color: var(--ink); background: var(--surface-2); }
.site-nav a[aria-current="page"] { color: var(--ink); background: var(--surface-2); font-weight: 600; }
.brand-btn {
  display: inline-flex; align-items: center; gap: 8px; flex: none;
  height: 38px; padding: 0 12px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--surface); color: var(--ink); font-size: .875rem; font-weight: 600; cursor: pointer;
}
.brand-btn .sw { width: 14px; height: 14px; border-radius: 4px; background: var(--brand); box-shadow: inset 0 0 0 1px rgb(0 0 0 / .15); }
@media (max-width: 860px) {
  .site-head__in { flex-wrap: wrap; gap: 6px 12px; padding-block: 10px 6px; }
  .site-nav { order: 3; flex-basis: 100%; margin-inline: -6px; }
  .brand-btn { margin-left: auto; }
  .hide-sm { display: none; }
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  min-height: 48px; padding: 0 20px; border-radius: 12px; border: 0; cursor: pointer;
  font: 600 1rem/1.1 var(--f-body); text-decoration: none; text-align: center;
  transition: transform .12s ease, background-color .2s ease, box-shadow .2s ease;
}
.btn:active { transform: translateY(1px); }
.btn-brand { background: var(--brand); color: var(--on-brand); }
.btn-brand:hover { box-shadow: 0 0 0 4px color-mix(in srgb, var(--brand) 30%, transparent); }
.btn-line { background: transparent; color: inherit; box-shadow: inset 0 0 0 1.5px currentColor; }
.btn-line:hover { background: color-mix(in srgb, currentColor 8%, transparent); }
.btn-quiet { background: var(--surface-2); color: var(--ink); }

/* ---------- chips & badges (page level) ---------- */
.chip {
  display: inline-flex; align-items: center; gap: 6px; height: 26px; padding: 0 10px;
  border-radius: 999px; font-size: .78rem; font-weight: 600; white-space: nowrap;
  background: var(--surface-2); color: var(--ink-2);
}
.chip.ok { background: var(--ok-soft); color: var(--ok); }
.chip.warn { background: var(--warn-soft); color: var(--warn); }
.chip.alarm { background: var(--alarm-soft); color: var(--alarm); }
.chip.river { background: var(--river-soft); color: var(--river); }
.chip.brand { background: var(--brand); color: var(--on-brand); }
.chip .i { width: 14px; height: 14px; }

/* ---------- brand dialog (white-label) ---------- */
.brand-dlg {
  border: 0; padding: 0; border-radius: 18px; width: min(460px, calc(100vw - 32px));
  background: var(--surface); color: var(--ink); box-shadow: var(--shadow);
}
.brand-dlg::backdrop { background: rgb(8 12 15 / .55); }
.brand-dlg form { display: flex; flex-direction: column; gap: 16px; padding: 22px; }
.brand-dlg h2 { font: 700 1.6rem/1.1 var(--f-display); }
.brand-dlg p { color: var(--ink-2); font-size: .9rem; }
.fld { display: flex; flex-direction: column; gap: 6px; }
.fld label { font-size: .85rem; font-weight: 600; }
.fld input[type="text"] {
  height: 44px; padding: 0 12px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--paper); color: var(--ink); font: inherit;
}
.swatches { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.swatches button {
  width: 34px; height: 34px; border-radius: 10px; border: 0; cursor: pointer;
  box-shadow: inset 0 0 0 1px rgb(0 0 0 / .15);
}
.swatches button[aria-pressed="true"] { outline: 3px solid var(--ink); outline-offset: 2px; }
.swatches input[type="color"] { width: 44px; height: 34px; border: 1px solid var(--line); border-radius: 10px; background: var(--paper); padding: 2px; cursor: pointer; }
.dlg-actions { display: flex; flex-wrap: wrap; gap: 10px; justify-content: flex-end; }

/* ---------- footer ---------- */
.site-foot { border-top: 1px solid var(--line); padding-block: 28px 44px; color: var(--ink-3); font-size: .875rem; }
.site-foot .wrap { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }
.site-foot p { max-width: 70ch; }

/* ---------- gallery pages ---------- */
.gal-head { padding-block: 40px 8px; display: grid; gap: 14px; }
.gal-jump { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.gal-jump a { text-decoration: none; }
.gal-group { padding-block: 28px 8px; }
.gal-group > .wrap > header { display: grid; gap: 6px; margin-bottom: 22px; max-width: 70ch; }
.gal-grid {
  --gal-zoom: .62;
  display: grid; gap: 34px 26px;
  grid-template-columns: repeat(auto-fill, minmax(calc(380px * var(--gal-zoom)), 1fr));
}
@media (min-width: 1400px) { .gal-grid { --gal-zoom: .66; } }
@media (max-width: 560px) { .gal-grid { --gal-zoom: .8; justify-items: center; } }
.shot { display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.shot .device { --zoom: var(--gal-zoom); }
.shot figcaption { display: grid; gap: 6px; max-width: 34ch; }
.shot h3 { font: 700 1.05rem/1.3 var(--f-body); }
.shot p { font-size: .9rem; color: var(--ink-2); line-height: 1.5; }
.shot .tags { display: flex; flex-wrap: wrap; gap: 6px; }
.shot a { font-size: .875rem; font-weight: 600; }

/* ---------- motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}

.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; }